You need to change coolant when you notice the following conditions:

Low sump level

Abnormal fluid appearance (change in color)

Foul smell (rancidity)

Floating matter on the fluid (chips, swarf, mold)

Tramp oil floating on the surface (leaking machine and hydraulic oils)

Excessive foam (improper mixture, too high of pressure, excessive air in system)

Dirty machine or trenches (cleaners in the fluid have become depleted)

User notices skin irritation

User has respiratory irritation

Other problems that might be fluid related are:

—rust on machine or part —staining on machine or part

—tool failure due to loss of coolant perfor- mance

—growth of fungi that would block coolant flow

—change in coolant viscosity (thicker or thin- ner

—accumulation of water at the bottom of the sump in straight oils

—dirt and grit suspended in coolant —general loss of performance (burning part

or tool)

Consult your coolant manufacturer and MSDS for complete use and disposal information.

Model G0717 (Mfg. Since 9/10)

Blade Brush

The lower blade guide arm has a self-adjusting wire brush that makes contact with the blade to help clear away chips and extend blade life (see Figure 41).

Blade Brush

Figure 41. Typical blade brush.

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Image 37
Grizzly G0717 owner manual Blade Brush, Typical blade brush